VirtualBox and no Ethernet

I know this might be more of a question for the VirtualBox (VB) commmunity, but it’s specific to FOG.

I’ve a FOG server running on VB, with a proxy DHCP done with dnsmasq. I then have another VM running on the same machine that I would like to use for testing.
When I’m connected to a router with an ethernet cable, I can just set both VMs to “Bridged Adapter” and point to the ethernet. This all works fine, and I’ve tested imaging with this.

Now the problem is when I don’t have access to a router, and I want to continue testing. At this point I only have wireless access to the internet. I can’t seemed to find any combination of settings that allow the VMs to speak together like they are on a normal network. Do anyone have any insight into making this work?

Turns out I can just use “Host-only Adapter”, and configure the host only to emulate the existing gateway and ip range I’ve set for the ethernet conection. Now I can leave the fog server alone, and just adjust the VirtualBox network connection.